The adaptive mechanisms of the marine diatom Thalassiosira weissflogii to long-term high CO 2 and warming.

Autor: Zhou Y; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Wu F; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Wu J; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Overmans S; Biological and Environmental Sciences and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia., Ye M; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Xiao M; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Peng B; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Xu L; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Huang J; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Lu Y; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Wang Y; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Liang S; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Zhang H; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Liang X; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Zhong Z; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Liu H; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Ruan Z; STU-UNIVPM Joint Algal Research Center, Marine Biology Institute, Shantou University, Shantou, Guangdong, 515063, China., Xia J; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China., Jin P; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
Jazyk: angličtina
Zdroj: The Plant journal : for cell and molecular biology [Plant J] 2024 Aug; Vol. 119 (4), pp. 2001-2020. Date of Electronic Publication: 2024 Jun 29.
DOI: 10.1111/tpj.16905
Abstrakt: While it is known that increased dissolved CO 2 concentrations and rising sea surface temperature (ocean warming) can act interactively on marine phytoplankton, the ultimate molecular mechanisms underlying this interaction on a long-term evolutionary scale are relatively unexplored. Here, we performed transcriptomics and quantitative metabolomics analyses, along with a physiological trait analysis, on the marine diatom Thalassiosira weissflogii adapted for approximately 3.5 years to warming and/or high CO 2 conditions. We show that long-term warming has more pronounced impacts than elevated CO 2 on gene expression, resulting in a greater number of differentially expressed genes (DEGs). The largest number of DEGs was observed in populations adapted to warming + high CO 2 , indicating a potential synergistic interaction between these factors. We further identified the metabolic pathways in which the DEGs function and the metabolites with significantly changed abundances. We found that ribosome biosynthesis-related pathways were upregulated to meet the increased material and energy demands after warming or warming in combination with high CO 2 . This resulted in the upregulation of energy metabolism pathways such as glycolysis, photorespiration, the tricarboxylic acid cycle, and the oxidative pentose phosphate pathway, as well as the associated metabolites. These metabolic changes help compensate for reduced photochemical efficiency and photosynthesis. Our study emphasizes that the upregulation of ribosome biosynthesis plays an essential role in facilitating the adaptation of phytoplankton to global ocean changes and elucidates the interactive effects of warming and high CO 2 on the adaptation of marine phytoplankton in the context of global change.
(© 2024 Society for Experimental Biology and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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